import auth from '@/plugins/auth'
import router, { constantRoutes } from '@/router'
import { getRouters } from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'
import { listDept } from '@/api/system/dept'

const permission = {
  state: {
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: [],
    classify: [],
    isAdmin: false
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes
      state.routes = constantRoutes.concat(routes)
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      state.defaultRoutes = constantRoutes.concat(routes)
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      state.topbarRouters = routes
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes
    },
    SET_CLASSIFY(state, data) {
      state.classify = JSON.parse(JSON.stringify(data))
    },
    SET_IS_ADMIN(state, data) {
      state.isAdmin = data
    }
  },
  actions: {
    // 生成路由
    GenerateRoutes({ commit }) {
      return new Promise(resolve => {
        // 向后端请求路由数据
        getRouters().then(async res => {
          let route = res.data.map(item => {
            let children = item.userMenuVOList.map(el => {
              return {
                'name': el.route,
                'path': el.route,
                'hidden': !el.hide,
                'component': loadView(el.description),
                'meta': {
                  'title': el.menuName,
                  icon: el.icon,
                  'noCache': false,
                  'link': null
                }
              }
            })
            if (item.menuType === 1) {
              return {
                'name': item.route,
                'path': item.route,
                'hidden': !item.hide,
                'redirect': 'noRedirect',
                'component': Layout,
                'alwaysShow': true,
                'meta': {
                  'title': item.menuName,
                  'icon': item.icon,
                  'noCache': false,
                  'link': null
                },
                children
              }
            } else {
              return {
                'name': item.route,
                'path': item.route,
                'hidden': !item.hide,
                'redirect': 'noRedirect',
                'component': loadView(item.description),
                'alwaysShow': true,
                'meta': {
                  'title': item.menuName,
                  'icon': item.icon,
                  'noCache': false,
                  'link': null
                },
                children
              }
            }
          })
          commit('SET_IS_ADMIN', route.some(item=>item.path==='/system'))
          let { data: classify } = await listDept({ typeCollection: 2 })
          commit('SET_CLASSIFY', classify)
          let arr = classify.map(item => {
            let children = item.departmentTreeVOList.map(el => {
              let query = { id: el.id }
              return {
                'name': `fl_${el.id}`,
                'path': `index_${el.id}`,
                'hidden': false,
                'component': loadView('qyxx/index'),
                'query': JSON.stringify(query),
                'meta': {
                  'title': el.name,
                  tagName: `${item.name} - ${el.name}`,
                  'noCache': false,
                  'link': null
                }
              }
            })
            return {
              'name': `fjfl_${item.id}`,
              'path': `/qyxx_${item.id}`,
              'hidden': false,
              'redirect': 'noRedirect',
              'component': Layout,
              'alwaysShow': true,
              'meta': {
                'title': item.name,
                'noCache': false,
                'link': null
              },
              children
            }
          })
          // console.log(arr)
          route = [...arr, ...route]
          // const sdata = JSON.parse(JSON.stringify(res.data))
          // const rdata = JSON.parse(JSON.stringify(res.data))
          // const sidebarRoutes = filterAsyncRouter(sdata)
          // const rewriteRoutes = filterAsyncRouter(rdata, false, true)
          // const asyncRoutes = filterDynamicRoutes(dynamicRoutes)
          // rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true })
          router.addRoutes(route)
          commit('SET_ROUTES', route)
          commit('SET_SIDEBAR_ROUTERS', constantRoutes.concat(route))
          commit('SET_DEFAULT_ROUTES', route)
          commit('SET_TOPBAR_ROUTES', route)
          resolve(route)
        })
      })
    }
  }
}

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.userMenuVOList) {
      route.userMenuVOList = filterChildren(route.userMenuVOList)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else if (route.component === 'InnerLink') {
        route.component = InnerLink
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
      if (el.children && el.children.length) {
        children = children.concat(filterChildren(el.children, el))
        return
      }
    }
    children = children.concat(el)
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  routes.forEach(route => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions)) {
        res.push(route)
      }
    } else if (route.roles) {
      if (auth.hasRoleOr(route.roles)) {
        res.push(route)
      }
    }
  })
  return res
}

export const loadView = (view) => {
  if (process.env.NODE_ENV === 'development') {
    return (resolve) => require([`@/views/${view}`], resolve)
  } else {
    // 使用 import 实现生产环境的路由懒加载
    return () => import(`@/views/${view}`)
  }
}

export default permission
